Supernatural - TV Guide: Wednesday Playlist May 8 '13 - CW 9/8C

... THE WEDNESDAY GUIDE: Castiel is back on The CW'sSupernatural (9/8c) to help the Winchester boys find the key to the third trial, which may lurk within an undiscovered film. Is that why the episode is titled "Clip Show," or could that have something to do with the devious Crowley digging into the brothers' past?